Journal of the Korean Geosynthetics Society (한국지반신소재학회논문집)

Korean Geosynthetics Society (한국지반신소재학회)
권호 표지
DOI QR코드

DOI QR Code

Experimental study on flow characteristics for the high efficiency transporting of the dredged soil

준설토 이송고효율화를 위한 유동특성의 실험적 분석

  • Received : 2016.05.09
  • Accepted : 2016.03.25
  • Published : 2016.03.30
Download PDF
⟨ Previous Next ⟩

Abstract

To evaluate the effects of magnetic force for transporting the dredged soil, magnetic energy inducing device was installed at the dredger. The whole length of transporting pipeline reaches more than 8.5km and the efficiency of the system and the characteristics of the flow are critical factors. The main parameters which govern the flow are flow-rate, velocity, concentration and slip-layer's condition, so in the field test monitoring system was applied to check the real time conditions of the closed circuit flow and the main parameters. From analyzing the relation between the dredged soil amounts and the pump power, it can be concluded that the magnetic forces effect on the transporting system, increase the transporting quantities of dredged soil and decrease power consumption of the pump.

준설토 이송 시 윤활층에 전자기장을 인가하여 이송 동력을 절감하고, 송토량을 증가시키는 연구의 일환으로, 이런 전자기장 장치의 실제 적용성을 검증하고자 실현장 8.5km의 이송거리의 준설현장에 전자기장 장치를 설치하여 그 효과를 검증하였다. 이송 유속에 관계되는 운전 조건 및 토질상태와 유동상태를 모니터링하고, 획득한 데이터를 송토량과 동력 사이의 관계로 정리하여 전자기장 인가 후 약 30%의 동력대비 이송량 증가가 있음을 확인하였고, 이를 통해 전자기장 인가가 준설토 이송 시 동력절감에 효과가 있음을 확인하였다.

Keywords

References

  1. Afshin, H., Gholizadeh, M., Khorshidi, N. (2010), "Improving Mechanical Properties of High Strength Concrete by Magnetic Water Technology", Scientia Iranica. Transaction A, Civil, Vol.17, No.1, pp.74.
  2. BROWN, A. B. D., SMITH, C. G., RENNIE, A. R. (2000), "Pumping of water with ac electric fields applied to asymmetric pairs of microelectrodes", Physical review E, Vol.63, No.1.
  3. Choi, M. S., Kim, Y. S., Kim, J. H., Kim, J. S., Kwon, S. H. (2014), "Effects of an externally imposed electromagnetic field on the formation of a lubrication layer in concrete pumping", Construction and Building Materials, Vol.61 pp.18-23. https://doi.org/10.1016/j.conbuildmat.2014.02.071
  4. Durand, R. (1953), "Basic Relationships Of The Transportation Of Solids In Pipes - Experimental Research", Proceedings@sMinnesota International Hydraulic Convention. ASCE, p.89-103.
  5. Kim, Y. S., Lee, M. H., Lee, Y. J. (2014), "Test Study about Electro magnetic force effect to apply dredging soil transport", Journal of academia-industrial technology, Vol.8, No.6, pp.2883-2890.
  6. Su, N., Wu, C. F. (2003), "Effect of magnetic field treated water on mortar and concrete containing fly ash". Cement and Concrete Composites, Vol.25, No.7 pp.681-688. https://doi.org/10.1016/S0958-9465(02)00098-7
  7. Yu, Q., Sugita S., Sawayama K., Isojima, Y. (1998), "Effect of electron water curing and electron charging curing on concrete strength", Cement and Concrete Research, Vol.28, No.9, pp.1201-1208. https://doi.org/10.1016/S0008-8846(98)00118-5

Cited by

  1. Enhancement of the Complex Performance of Dredged Soil Using a Developed Electromagnetic Field System vol.11, pp.5, 2016, https://doi.org/10.11004/kosacs.2020.11.5.053